WARNING TO THE POPULATION – PRECIPITATION, WIND and HIGH SEAS ISSUED 16TH MARCH 2018

SITUATION

According to the information provided by the IPMA, it is expected that within the next 48 hours that the weather conditions will be:

 Persistent and occasionally heavy precipitation (> 10 mm / h) from 00:00 tomorrow (17 MAR), with the period of greatest intensity between 00:00 and 07:00 in the districts of Leiria, Lisbon and Santarém, progressing southwards, with greater probability of affecting between 12.00 and 21.00 hrs, the districts of Lisbon, Setúbal, Beja and Faro.

From late Sunday morning (18 MAR) there is a likelihood that the precipitation will subside.

 Snowfall above 800/1000 meters may accumulate up to 5 cm in districts between the North and the Centre of the country in the period from 1800 to 2100 hrs tomorrow (MAR 17).

 Increase in the wind intensity from the end of today, remaining during Saturday (17 MAR), with gusts reaching 90 km / h, along the coast, and 100 km / h in the highlands, in especially in the coastal strip south of Cabo Mondego.

The most critical periods will be between 06:00 and 12:00 and between 18:00 and 24:00 hrs.

 Possibility of extreme winds (intensity higher than above indicated) along the central and southern coast, especially in the afternoon.

 Decreased wind intensity from late Sunday morning (MAR 18), maintaining, however, the forecast of gusts up to 70 km / h.

 High seas with a 4 to 5 m northwest swell on the west coast south of the Cape Mondego until late Sunday morning (MAR 18). On the south coast, maritime southwest, also 4 to 5 m, from the late afternoon tomorrow (MAR 17).

Follow the weather forecasts on www.ipma.pt

EXPECTED EFFECTS

In view of the situation described, the following effects may occur:

Slippery road surface and possible formation of water and ice patches;

Possibility of rapid flooding in urban areas, due to the accumulation of rainwater or insufficient drainage systems;

Possibility of flooding by transhipment of water lines in the most vulnerable areas;

Floods of underground urban structures with where there are drainage deficiencies;

Damage to mounted or suspended structures;

Drainage problems in urban systems, especially those occurring during periods of high tide, and may cause flooding in the most vulnerable places;

Possibility of falling branches or trees due to stronger winds;

Possible coastal shoreline accidents;

Landslips caused by instability of slopes due to loss of consistency due to saturation of soil in water;

PREVENTIVE MEASURES

The ANPC reminds people of the need to take appropriate action, particularly in the most vulnerable areas, including the main self-protection measures as follows in these situations:

Ensure that rainwater drainage systems are cleared and that inert aggregates and other objects that can be drawn in. or obstruct the free flow of water, are removed;

Adopt a defensive driving, reducing the speed and taking special care with the possible accumulation of snow and the formation of water patches on the roads;

Avoid crossing flooded areas in order to prevent people and / or vehicles falling into holes in the pavement or open sewers;